/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundTrigger.h
FTriggers are triggered using FTrigger::TriggerTime orFTrigger::TriggerFrame. FTriggers track time internally by callingFTrigger::Advance. Executing audio signal processing on buffers can be performed by callingFTrigger::ExecuteBlockorFTrigger::LookAhead.
class FTrigger